• Configurations: Can be configured as a combination of keys and input/output lines
• Number of QTouch® Keys: Two to six
• Number of I/O Lines: Seven, configurable for input or output, with PWM control for LED driving
• Technology: Patented spread-spectrum charge-transfer (direct mode)
• Key Outline Sizes: 6 mm x 6 mm or larger (panel thickness dependent); widely different sizes and shapes possible
• Layers Required: One
• Electrode Materials: Etched copper, silver, carbon, Indium Tin Oxide (ITO)
• Panel Materials: Plastic, glass, composites, painted surfaces (low particle density metallic paints possible)
• Up to 10 mm glass (electrode size dependent)
• Up to 5 mm plastic (electrode size dependent)
• Key Sensitivity: Individually settable via simple commands over serial interface
• Interface: I2C-compatible slave mode (100 kHz). Discrete detection outputs
• Signal Processing:
• Self-calibration
• Auto drift compensation
• Noise filtering
• Adjacent Key Suppression® (AKS®)
• Applications: Mobile appliances
• Power: 1.8 V to 5.5 V
• Package: 28-pin 4 x 4 mm QFN RoHS compliant IC

Sensor IC designed to simplify and speed the development of mobile and other applications. It provides all of the functions needed to create a fully functional touch interface for mobile phones and handheld devices. Based on Microchip QTouch technology, this IC integrates the required signal processing and input/output functions into a 28-pin, 4mm by 4mm RoHS compliant package. It includes a guard channel to prevent false detections by other keys. Its LEDs are directly powered by the IC, eliminating the need for an external LED controller.